Golf Pool Rules and Spotting Balls Knocked in by Opponents

Golf Pool Rules and Spotting Balls Knocked in by Opponents

In golf pool rules, what happens when another player knocks someone's ball into a pocket? Is the ball spotted during that round, or after?

With 4 players, for example, players 1, 2, and 2 tee off. Someone knocks player 2's ball into hole 1 before player 4 tees off. Player 4 sinks his tee shot. Is player 2’s ball spotted before player 4 shoots his second shot?